Research Article

Primary Non-Hodgkin’s Lymphoma of Stomach: To Report 54 Patients and Analysis of Major Reported Series

Table 3

The stratified log-rank test analysis of prognostic factors for histologic subtypes.

Prognostic factorsPatients’ number5-year OS (%) value
DLBCMALT

WHO performance score
 0-1 4567.090.9<0.001
 2 500.000.0
 3 400.050.0
Sex
  Female2959.872.90.985
  Male2558.683.3
Age
 ≤50 years 2874.988.90.021
 >50 years2636.260.0
Ann Arbor stage
  I3364.790.00.039
  II1573.350.0
  III-IV600.050.0
Primary tumor size
 1–5 cm 1357.10.107
 6–9 cm2172.1
 ≥10 cm2063.657.1
B symptoms
 No3673.281.80.025
 Yes1835.466.7
Serum LDH level
  Normal 3494.787.5<0.001
  Elevated2021.466.7
Treatment modality
  Surgery + CT ± RT 4453.882.50.502
  CT and/or RT1087.550.0
IPI
 0-1 risk factor 3587.090.9<0.001
 2 risk factor620.0
 ≥3 risk factor1300.033.3

All patients5459.577.90.405

DFS: disease-free survival; OS: overall survival; CT: chemotherapy; RT: radiotherapy; IPI: International Prognostic Index.